1. What are the Important Questions in C Programming?

i. How many basic Data types are supported in C Programming Language?

ii. Difference between Call by Value and Call by Reference.

iii. What do you mean by Pointer in C Programming?

iv. Difference between calloc() and malloc()

v. Define Preprocessor.

vi. What is /0 character?

vii. Difference between the Compiler and the Interpreter.

viii. How do you a Function declare in C Language?

ix. Define Dynamic Memory allocation.

x. Define recursion in C language

2. Why curly brass is used in C programming?

Because we use Curly braces along with loops and conditional statements to avoid confusion and to define a clear scope. Curly braces are used to group a set of statements in C.

3. Java interview questions for experienced.

i. Difference between Overloading and Overriding.
ii. Why Java doesn’t support multiple inheritances?
iii. Define StringBuffer and StringBuilder
iv. Difference between this() and super().
v. What is synchronization and why is it important in Java?

4. Advanced Java programming multiple choice questions with answers.

1. Which package is used for importing swing controls?
i. java.awt.
ii. java.swing
iii. javax.swing
iv. All of above

Ans javax.swing

2. In which file database table configuration is stored?
i. .sql
ii. .ora
iii. .hbm
iv. .dbm

Ans .hbm

3. ….. consist of data and methods?
i. Class
ii. Vectors
iii. Variable
iv. None of the above

Ans vectors

4. Which of the following is a reserved keyword in Java?
i. main
ii. object
iii. system
iv. strictfp

Ans strictfp

5. JDBC stands for –

i. Java Database Connection
ii. Java Database Connectivity
iii. Java Database Concept
iv. Java Database Communication

Ans Java Database Connectivity

6. JDBC-ODBC bridge is –
i. two-tired
ii. Three-tiered
iii. Multi-threaded
iv. None of these

Ans Multi-threaded

7. Which of the following modifiers can be applied to a constructor?

i. volatile

ii. final

iii. private

iv. abstract

Ans private

8. Which of the following is a business component in J2EE?

i. Enterprise Java Beans (EJB)

ii. Java servlet and JSP (Web)

iii. Applets

iv. Application clients

Ans Enterprise Java Beans (EJB)

9. All raw data types should be read and uploaded to the database as an array of –

i. byte
ii. boolean
iii. int
iv. char

Ans byte

10. In InetAddress class which method returns the hostname of the IP address?
i. public string gethostname()
ii. public string gethostaddress()
iii. public string inetaddress gethostname()
iv. None of these

Ans public string gethostname()

5. Software requirements in Java of Business Management.

i. Operating System
ii. Java SDK
iii. JRE
iv. Java Servlet Container Supported Database and library
vi. Java Compiler such NetBeans, Eclipse, BlueJ, etc.
if you publish your Java application online then you also need the following of:
vii. IaaS (Infrastructure as a Service)
viii. PaaS (Platform as a Service)

6. WordPress Interview Questions

i. Differences between posts and pages in WordPress

ii. How many default tables are in WordPress?

iii. What is Child Theme in WordPress?

iv. How many types of hooks are in WordPress? explain it.

v. What do you mean by the Custom field in WordPress?

7. How to prevent SQL injection in WordPress?

Ans Tips-1: Update WordPress Theme and Plugins day by day.

Tips-2: Use the latest version of PHP in WordPress Backend.

Tips-3: Don’t use any nulled plugins or WordPress themes.

Tips-4: Use a Firewall.

Tips-5: Always use a trusted security plugin to protect your WordPress sites such as Wordfence or iThemes Security.

8. DBMS basic objective questions and answers

i. What is Primary Key?
Ans The primary key uniquely identifies each record in a table and must never be the same for two records.

ii. What are the roles of DBA?
Ans The DBA controls the database structure and sets up the definition for physical as well as the logical implementation of the database.

Roles of DBA:
(i) Schema Definition
(ii) Storage structure and access method definition

(iii) Schema and physical-organization modification

(iv) Granting of authorization for data access

(v) Routine maintenance

(vi) Maintaining the integrity

iii. What are the properties of the transaction?
Ans A transaction is expected to contain certain properties that are called ACID Properties of Transactions. There are four properties of ACID Properties of Transactions are listed as below:

  • Atomicity
  • Consistency
  • Isolation
  • Durability

iv. What is Normalization? How many types of Normalization Forms are in DBMS?
Ans Normalization is a process of simplifying the relationship among data elements in a record. There are mainly five types of Normalization Forms in DBMS.

  • First Normal Form (1NF)
  • Second Normal Form (2NF)
  • Third Normal Form (3NF)
  • Boyce Codd Normal Form (BCNF)
  • Fourth Normal Form (4NF)

v. What are triggers?
Ans In SQL, Triggers is a kind of stored procedure used to create a response to a specific action performed on the table such as INSERT, UPDATE or DELETE.

9. Advanced Operating System Important Questions

i. What is Process Synchronization?

ii. State the conditions for a deadlock to occur.

iii. What is an inode?

iv. Write the Banker’s Algorithm.

v. What is fault tolerance?

10. PHP basic interview questions

i. How do you define a variable in PHP?

ii. What is a NULL variable?

iii. How do you define a constant in PHP?

iv. How many data types are in PHP?

v. How can we create a database using PHP and MySQL?